Cold milling machine



FIG. 1 is a front right perspective view of my new cold milling machine design;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a front left perspective view thereof; and,

FIG. 4 is a left side elevation view thereof.

The broken lines show portions of a cold milling machine that form no part of the claimed design. 

CLAIM The ornamental design for a cold milling machine, as shown and described. 